LTC1343 Linear Technology, LTC1343 Datasheet - Page 24

• Manufacturer Part Number: LTC1343
• Description: Software-Selectable Multiprotocol Transceiver
• Manufacturer: Linear Technology

LTC1343
APPLICATIONS
24
LATCH
SCTE
RXD
RXC
DSR
DCD
DTR
TXC
TXD
CTS
CTX
TM
M2
M1
M0
RL
LB
LL
RI
+
U
V
+
CC
Figure 36. Controller-Selectable Multiprotocol DCE Port with RI and DB-25 Connector
C3
1 F
C11
1 F
+
+
V
5V
V
V
V
CC
CC
CC
CC
INFORMATION
1 F
1 F
100k
100k
C1
C9
U
C12
1 F
C5
1 F
R1
R2
+
+
10
12
13
16
40
23
10
12
13
14
15
16
20
22
11
25
40
23
14
15
20
22
11
25
1
2
4
1
2
4
3
8
5
3
8
5
6
7
6
7
9
9
CTRL
LATCH
INVERT
423 SET
GND
LB
CTRL
LATCH
INVERT
423 SET
GND
LB
LTC1343
LTC1343
W
CHARGE
CHARGE
PUMP
D1
D2
D3
D4
PUMP
D1
D2
D3
D4
R2
R4
R2
R4
R1
R3
R1
R3
DCE
DCE
M2
M1
M0
M2
M1
M0
EC
EC
32
26
24
32
26
44
43
42
41
39
38
37
36
35
34
33
31
30
29
28
27
21
19
18
17
44
43
42
41
39
38
37
36
35
34
33
31
30
29
28
27
21
19
18
17
24
+
+
V
RIEN = RS232
V
+
+
U
CC
CC
C2
1 F
C4
3.3 F
C10
1 F
C13
3.3 F
14
2
V
V
CC
EE
100pF
C6
3
5
4
100pF
C7
8
6
7
100pF
C8
11
9
10
12
16
13
15
18
17
19
20 22 23 24 1
DCE/
DTE
V
CC
LTC1344
M2
M1
LATCH
M0
21
10
20
16
17
15
12
24
11
14
18
13
22
23
19
25
21
3
9
2
7
1
5
6
8
4
LATCH
SGND (102)
SHIELD (101)
TM A (142)
RXD A (104)
RXD B
RXC A (115)
RXC B
TXC A (114)
TXC B
SCTE A (113)
SCTE B
TXD A (103)
TXD B
LL A (141)
CTS A (106)
CTS B
DSR A (107)
DSR B/RI A (125)
DCD A (109)
DCD B
DTR A (108)
DTR B
RTS A (105)
RTS B
RL A (140)
DB-25 FEMA;E
CONNECTOR
1343 F36